The Hyundai G6DT is a 2,199 cc, V6 turbo‑diesel engine produced between 2011 and 2018. It features dual overhead camshafts (DOHC), 24 valves, and a variable geometry turbocharger (VGT) paired with common-rail direct injection. In standard form it delivered 147–154 kW (200–210 PS) and torque figures between 436–450 Nm, providing strong low-end pull and refined highway cruising.
Fitted to models such as the Grandeur (HG), Genesis (DH), and Santa Fe (DM), the G6DT was engineered for executive sedans and mid-size SUVs prioritizing torque, refinement, and towing capability. Emissions compliance was achieved through exhaust gas recirculation (EGR), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue, allowing consistent Euro 5 compliance across all production years.
One documented concern is premature wear of the high-pressure fuel pump drive gear, which can lead to fuel system failure. This issue, referenced in Hyundai Technical Service Bulletin TSB-13-DT-004, stems from inadequate lubrication under sustained high-load conditions. From 2015, Hyundai introduced a revised pump drive assembly with hardened gear surfaces and improved oiling passages.
All production years 2011–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/8901).
The Hyundai G6DT is a 2,199 cc V6 turbo-diesel engine engineered for executive sedans and SUVs (2011–2018). It combines DOHC architecture with common-rail direct injection and a variable geometry turbocharger to deliver strong low-end torque and smooth operation. Designed to meet Euro 5 emissions standards, it balances performance with regulatory compliance through EGR, DPF, and SCR systems.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,199 cc | |
| Fuel type | Diesel (Ultra-low sulfur, EN 590) | |
| Configuration | V6, DOHC, 24‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 84.0 mm × 99.0 mm | |
| Power output | 147–154 kW (200–210 PS) | |
| Torque | 436–450 Nm @ 1,750–2,750 rpm | |
| Fuel system | Bosch CP4.2 common-rail (up to 2,000 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable-geometry turbo (VGT) | |
| Timing system | Chain-driven DOHC | |
| Oil type | Hyundai SP 5W‑30 (API CJ-4/ACEA C3) | |
| Dry weight | 210 kg |
The G6DT provides strong, refined torque ideal for towing and highway cruising but requires strict adherence to 10,000 km oil change intervals to prevent high-pressure fuel pump and turbo degradation. Hyundai SP 5W‑30 oil meeting ACEA C3/API CJ-4 is critical due to its low-SAPS formulation protecting the DPF and SCR catalyst. Extended idling or frequent short trips may accelerate DPF clogging and AdBlue system faults. Early engines (pre-2015) should be inspected for fuel pump drive wear; affected units may require the updated pump assembly per TSB-13-DT-004. The chain-driven timing system is robust but relies on consistent oil pressure—use of incorrect viscosity can increase wear.
Oil Specs: Requires Hyundai SP 5W‑30 (API CJ-4/ACEA C3) specification (Hyundai Owner’s Manual Genesis 2.2 CRDi 2013).
Emissions: Euro 5 certification applies to all 2011–2018 models (VCA Type Approval #VCA/EMS/8901). No Euro 6 variants exist.
Power Ratings: Measured under SAE J1349 standards. Output varies slightly by model calibration (Hyundai PT-2016).
Hyundai Technical Information System (TIS): Docs H-TIS-G6DT-001, TSB-13-DT-004
VCA Type Approval Database (VCA/EMS/8901)
SAE International: J1349 Engine Power Certification Standards
The Hyundai G6DT was used across Hyundai's HG/DH/DM platforms with longitudinal mounting and no hybrid variants. This engine received platform-specific adaptations—reinforced mounts in the Santa Fe, acoustic shielding in the Grandeur, and revised AdBlue tank routing in the Genesis—and from 2015 the fuel pump drive revision improved reliability, creating service part distinctions. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crankshaft pulley (Hyundai TIS H-TIS-G6DT-001). The 7th VIN digit indicates engine family ('D' for G6DT series). Visual differentiation: G6DT uses a single VGT turbo with AdBlue dosing unit mounted downstream of the DPF, whereas petrol V6 engines lack SCR components. Service parts for pre-2015 high-pressure fuel pumps are not interchangeable with post-2015 units due to drive gear redesign per TSB-13-DT-004.
The G6DT's primary reliability risk is high-pressure fuel pump drive gear wear in pre-2015 builds, with elevated incidence in high-mileage or towing applications. Hyundai internal service data from 2014 indicated a measurable subset of early engines exhibiting fuel pressure faults after 120,000 km, while UK DVSA records show no significant emissions-related MOT failures tied to this engine. Extended oil change intervals and use of non-specified oil amplify pump wear, making maintenance adherence critical.
Analysis derived from Hyundai technical bulletins (2013–2017) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HYUNDAI G6DT.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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